Some Irish person mistakenly believed to be decended from Spanish Armada Sailors, or Barbary pirates (Sack of Baltimore). More likely decended from Mesolithic Basque people (genetic markers give high indication). Term is used in America but mostly unheard of in Ireland.

1)Real Irishmen. Not Blondes or Ginger Snaps with freckles or any garbage like that. Despite popular belief, Black Irish is not from Spain, because the ORIGINAL Celtic inhabitants of the British Isles all had black hair, the Celts being from Gaul (France, hence the language Gaelic) so they had black hair. The only reason why most Scotch-Irish people have blond or red hair and freckles is because of the humungous Viking and Saxon influence. Therefore, Black Irish is the Real Irish. The End.

a boy that instead of running up walls successfully runs into them, trespasses on property everyday of the week and gets caught, totally not sneaky, works at kfc, tries && fails miserably to get every girl he sets his eyes on && tries to get dome every chance he gets.

"you cheated on me with her.!!"
"you gave dome to who.?!"
"god, your a such a blackirish."